PDF malware analysis — malicious · e5929ee5ca9a2ccc

MALICIOUS

PDF

51.4 KB

MD5: 8795ac5c6a8f956275919ecc053196a6 SHA-1: 50f6a96695d9fb3f14ebdecf02fb57a92740d8b8 SHA-256: e5929ee5ca9a2cccf0e8745460d64a10e975fd0b2f955c85fa80fd52c5576866

102 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and a Flash object (Adobe.swf), indicated by multiple heuristic firings. The presence of these embedded objects suggests an attempt to execute code or exploit vulnerabilities within the user's system. The JavaScript stream, named 'javascript_obj0006_000.js', is likely responsible for initiating malicious actions, potentially downloading further payloads or exploiting known PDF vulnerabilities. The embedded Flash file (Adobe.swf) could also be used to deliver exploits.

Heuristics 9

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`Adobe.swf` `84eea196f1f999c6fa25423e98712d54d4f366127821e115673615df6b4a0847`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xE3B	42064 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `de369df0378093529c93a304d4739964cc87c1ebd156884e65c58eb716d8e0f5`	pdf-javascript-stream	PDF /JS object 6 at offset 0x105	10482 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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